Fluid-coated fanout compensator
AssigneeMaschinenfabrik Wifag
InventorRobert Langsch
Life of this patent
Estimating the term…
Abstract
A fanout compensator for a printing press, which comprises a rotary body formation, which has foot sections and head sections alternatingly next to each other along a longitudinal axis. The foot sections and head sections form a wave-shaped surface in order to deform a web to be printed on. The web wraps around the rotary body formation, in a wave-shaped pattern at right angles to the direction of conveying of the web. Fluid channels, which open on the surface of the rotary body formation, are formed in the rotary body formation. The rotary body formation has a fluid connection connected to the fluid channels in order to guide a pressurized fluid to the fluid channels and through the fluid channels to the surface of the rotary body formation.
Claims22
A fanout compensator for a printing press, the compensator comprising:
- a rotary body formation with foot sections and head sections arranged alternatingly adjacent to one another along a longitudinal axis, said foot sections and said head sections forming a wave-shaped surface to deform a web to be printed on, which wraps around the rotary body formation, in a wave-shaped pattern at right angles to a direction of conveying of the web, said rotary body having fluid channels opening on said surface of said rotary body formation and formed in the rotary body formation;
- and
- a fluid connection associated with said rotary body formation and connected to said fluid channels to guide a pressurized fluid to said fluid channels and through said fluid channels to said surface of said rotary body formation.
A process for compensating the fanout in a printing press, the process comprising:
- printing a web with printing ink and moistened with a moistening agent in a first printing gap and subsequently printing in a second printing gap;
- wrapping the web around a rotary body formation between the first printing gap and the second printing gap wherein the rotary body formation is wave-shaped at right angles to a direction of conveying of the web so that the web is deformed in a wave-shaped pattern at right angles to the direction of conveying;
- and
- discharging a pressurized fluid on the surface of the rotary body formation and admitting the fluid to the web during the wrapping on its underside facing the rotary body formation so that a fluid gap is generated and maintained between the wave-shaped surface of the rotary body formation and the web.
Dependencies are inferred from the claim text.